doc: update libavfilter documentation

Update the reference to the conversion tool to use avconv and
make sure the example line works as supposed.
Remove the paragraph pointing to the svn repo

1 files changed, 3 insertions, 16 deletions

diff --git a/doc/libavfilter.texi b/doc/libavfilter.texi
index 172b7fc..b452294 100644
--- a/doc/libavfilter.texi
+++ b/doc/libavfilter.texi
@@ -14,18 +14,6 @@
 Libavfilter is the filtering API of Libav. It is the substitute of the
 now deprecated 'vhooks' and started as a Google Summer of Code project.
 
-Integrating libavfilter into the main Libav repository is a work in
-progress. If you wish to try the unfinished development code of
-libavfilter then check it out from the libavfilter repository into
-some directory of your choice by:
-
-@example
-   svn checkout svn://svn.libav.org/soc/libavfilter
-@end example
-
-And then read the README file in the top directory to learn how to
-integrate it into ffmpeg and avplay.
-
 But note that there may still be serious bugs in the code and its API
 and ABI should not be considered stable yet!
 
@@ -48,15 +36,14 @@ and the vflip filter before merging it back with the other stream by
 overlaying it on top. You can use the following command to achieve this:
 
 @example
-./ffmpeg -i in.avi -s 240x320 -vf "[in] split [T1], fifo, [T2] overlay= 0:240 [out]; [T1] fifo, crop=0:0:-1:240, vflip [T2]
+./avconv -i input -vf "[in] split [T1], fifo, [T2] overlay=0:H/2 [out]; [T1] fifo, crop=iw:ih/2:0:ih/2, vflip [T2]" output
 @end example
 
-where input_video.avi has a vertical resolution of 480 pixels. The
-result will be that in output the top half of the video is mirrored
+The result will be that in output the top half of the video is mirrored
 onto the bottom half.
 
 Video filters are loaded using the @var{-vf} option passed to
-ffmpeg or to avplay. Filters in the same linear chain are separated by
+avconv or to avplay. Filters in the same linear chain are separated by
 commas. In our example, @var{split, fifo, overlay} are in one linear
 chain, and @var{fifo, crop, vflip} are in another. The points where
 the linear chains join are labeled by names enclosed in square